Knucklehead "Chunky" Doublewides. They have a .120 E, maybe a bit less, but they will basically make people crap their pants with how punchy they are. DR makes some nice coated ones, too.
Knucklehead seems to be a very obscure/small brand.
But their strings are fantastic!!! Chunkys sound great on my Geddy and Fattys sound great on my '73.
if you are looking for the Low growl "**** your pants" tone.. Get the Chunkys.. They will not disapoint.